package com.wang.test.demo.exception;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

//编写自定义的校验器
public class ListValueConstraintValidator implements ConstraintValidator<ListValue,Integer> {

    private Set<Integer> set=new HashSet<Integer>();

    //初始化方法
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int[] value = constraintAnnotation.vals();
        for (int i : value) {
            set.add(i);
        }

    }

    //判断是否校验成功

    /**
     *
     * @param value  需要校验的值
     * @param context
     * @return
     */
    @Override
    public boolean isValid(Integer value, ConstraintValidatorContext context) {

        return  set.contains(value);
    }
}
